Automobile lock



D. R. SCHNAARS.

AUTOMOBILE-LOCK.

APPLICATION FILED MAY I6. I922.

Patented Oct. 311, 1922.

2 SHEETS-SHEET I.

D. R. SCHNAARS.

AUTOMOBILE LOCK.

APPucATloN FILED MAY 16. 1922.

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Patented 3l, i522.,

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t@ PF?. Zw t il. ift il .ci in a DAVID RQSCHNAARS, OF BROOKLYN, NEW YORK, ASSIGNOR TO HOOLE MCACHINE @a ENGRAVING WORKS, F BROOKLYN, NEW' YORK, A CORPORATION 0F NEW YORK.

AUTOMOBILE LOCK.

Application filed May 16, 1922. Serial No. 561,467.

To all whom t 'may concern:

Be it known that l, DAVID R. Sanitarias, a citizen of the United States, residing at 19 Hull Street, in the borough of Brook- 5 lyn, of the city of New York, in the State of New- York, have invented cert-ain new and useful Improvements in Automobile Locks, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

The object of this invention is to provide a practical device whereby the driving wheel of an automobile can be locked to or unlocked from the driving axle, so that, when the wheel is unlocked from the axle, power cannot be transmitted from the motor to the wheel. l Many devices have been proposed heretofore for the purpose of prevent ing the rotation of an automobile wheel, in order to render the theft ofthe automobile difficult, but in many municipalities the use of such devices is forbidden bypolice regulations because of the difiiculty, as in the case of fire, of moving an automobile which has one or more of its wheels locked against rotation. No device is wholly effective against the theft of an automobile by towing it away, but such action attracts attention and arouses suspicion and is therefore rarely attempted. The majority of thefts of automobiles have been accomplished by driving them away under their own power, but with a practical device, such as that wherein the present invention consists, whereby a driving wheel of an automobile can be disengaged, through the manipulation of a suitable key, from its driving shaft, while proper driving engagement can again be secured by the manipulation of the key, the theft of an automobile is rendered diflicult. In accordance with the invention there is provided between the driving axle and the hub of the wheel mounted thereon, a clutch, the movable member of which can be moved by the manipulation of a key inserted in a lock so as to disengage the wheel from the shaft or to effect such engagement. rlhe invention will be explained more fully hereinafter with reference to the accompanying drawings in which it is illustrated and in which- Figure l is a view in elevation showing an automobile wheel hub to which the locking device is applied and with a portion of the wheel, the hub cap being removed.

Figure 2 is a longitudinal section thereof on the plane indicated by the broken line 2 2 of Figure 3, but on a larger scale than that of Figure l.

Figure 3 is a view in section on the plane indicated by the broken line 3-3 of Figure Il, looking in the direction of the arrows.

- Figure 1l is a View in section on the plane indicated by the broken line le-Ll of Figure 2.

Figure is a detail view in perspective of the movable clutch member.

engaged as hereinafter described.

shown the terminal portion of the shaft is tapered and receives with a driving fit a sleeve c which forms practically a part of the driving shaft, being secured thereto not only by the driving fit but by a key c sleeve is cylindrical exteriorly for convenience and has at its outer end a flange c2 which is slotted as at c3, thus forming, with the shaft vof which it virtually forms part,

the fixed member of a clutch.

it its inner end it is threaded to receive ring c4 which which forms an abutment for a spring hereinafter referred to.

The hub a is chambered, as at a2, to receive between itself and the sleeve c, a sleeve (Z which has a free lit within the hub and on the sleeve c and carries four keys d for engagement with the slots c3 in the flange c2 of the sleeve c, the keys CZ having ra free sliding fit in key ways a3 which are formed in lia the hub a. The sleeve (l and the keys d are urged toward the outer end of the hub by a spring e which is placed in a chamber formed Within the sleeve cl, between the sleeves c and d and abuts against the rim c4. The sleeve CZ is also provided with extended, overhanging lugs cl2 to be engaged by the cams of a cam ring f which is seated in a circular recess formed in the inner tace of the hub a" and'is provided with a gear f2 for engagement by a pinion f/ Which is formed on or secured to an extension g of the cylinder g2 of a cylind'erloc'k which lis seated Ain the hub vvithtits face normally covered, for protection from dirt, by amovable cover g3 which may be formed with a snap detent g4.

In order to prevent the possibility of removal of .the lhub ,from ithe `Wheel, when the Wheel 'is nnlocked :from l,the Oaxle, :and the manipulation of the r`parts -so yas :to .effect engagement of the Wheel with the axle, `the cam .ring j is .formed with ,keyhole slots f3, Which yengage headed studs Ji., except `when theparts are in the looked position, at vwhich time the studs register with 2the enlarged endsiof the slots. To prevent the hub trom being [drawn v.oft veven v.to sa limited extent, permitted bythe compression Iof `the spring e, a short plate a4 is set into the liub a. and secured Eby .a screw a?, its :end overlapping the ring f', 'which iis frabbeted, as at .f4 to :receive the end of :the plate. The 'slots f3, in co-. op.eratio;n with vthe headed studs uit, also .servefas will be observed, to limit lthe rotation of the cam ring f.

lt 'will .be understood that when all parts have been assembled properly and the cam ring f has been 4:rotated .so as .to permit the sleeve d to ,have its full -forward movement under the liniiuence :of ,the ,spring e, the keys d enter the slots c2 of the :flange c3 and so elfeetfdriving 'enga-gement l:between the hub and the axle, the @keys andthe slotted flange having ysuflicient strength to transmit, vunder all `conditions of use, the rotation ofthe laxle to the hub a and therefore tothe Wheel. It then at anytime :thereafter it should tbe desired 'to leave the automobile unattended.` the proper key is inserted in the .cylinder .g2 of :the lock andthe cylinder rotated until the eam ring vf has beenfrotatedas `tar aspossible. During this operation the cams f draw :back the sleeve QZ and the keys d', against ,the pressure ,of lthe :spring e, and Withdraw the lreys `CZ from 'the slots c3 of the :flange :rc2 and thereby disconnect the Wheel a from the axle b, :so that it is `then impossible yto 4move .the automobile under its own lpovver.

It vWill be understood that While the hub and locking devices as shown in the drawings have been designed with `reference to convenient application .tostandard forms, of Wheels and axles, various changes ycan .be

made in details of construction and arrange-- ment to suit different conditions ot use, and that the invention, except as pointed out in the claims, is not limited to the particular construction and arrangement shown and described herein.

l claim as m invention:

1. The combination of a driving axle, a Wheel hub mounted thereon and adapted to rotate therewith, a` clutch member .fixed to the axle within the hub, a second clutch memwith and movable into and out fof engagement with 'thejiixed clutch member, 'a cam ring yin operative :engagement With fthe movable clutch member, `and a lock "mounted -in the hub and in operative engagement vv-ith i the cam ring.

L3. The :combination off `a 'drivfimg axle, a wheel .hub mounted :thereon and adapted to rotate therewith, a. clutch member fixedf-to the laxle Within 'the hub, ,fa lfsleeve interposed between lthe axle .and the hub, `lrey'ed't'o ithe hub and having 'key to #engage 'the fined clutch member, a Ylock mounted `in l'the hub, and :means actuated by the operationof #the lock to move Isaid sleeve.

4L. The combination of -'a driving axle, 'a Wheel hub mounted' thereon and adapted to rotate therewith, a clutch member fixed to the axle 'Within the hub, a sleeve interposed between the axle and the hub, v#keyed to the hub and having ra key to engage the 'ffxed clutch member., a cam ring mounted Iin the hub in operative engagement with [said sleeve, randa lock in operative relation with saidsleeve to move the same.

l5. AThe combination of a ldriving axle, ya

Wheel hub mounted thereon and adapted 'to rotate therewith, a clutch member iixe'd to the axle Within the hub, a second clutch member Within the hub and in operative en`-- gag-ement ltherewith and movable v'into and 5 out of engagement with the fixed clutch member, a spring to move the second clutch member in one direction, aeam ring in operative engagement With the secon-d clutch member to hold the same in opposition 'to member Within the hub and 1in engagement 1'30 therewith and movable into and out of en gagement with the lixed clutch member, a cam ring mounted in the hub in operative engagement with the second Clutch member and having a key-hole slot, a fixed headed stud to engage the keyhole slot of the Cam ring, and means to operate the cam ring to disengage the movable clutch member from the fixed clutch member and to engage the headed vstud in the keyhole slot.

This specication signed this 11th day of May A. D. 1922.

DAVID R. SCHNAARS. 

